def runTest(self):
try:
baddiveseg = SegmentAscDesc(3, 150, 10, self.trimixtank1, 0)
baddiveseg.check()
except UnauthorizedMod:
pass
else:
self.fail("should raise UnauthorizedMod")
def test_wrong_mod_4(self):
"""test wrong mod 4."""
try:
baddiveseg = SegmentAscDesc(3, 150, 10, self.trimixtank1, 0)
baddiveseg.check()
except UnauthorizedMod:
pass
else:
self.fail("should raise UnauthorizedMod")
def ascend(self, target_depth):
"""Ascend to target depth, decompressing if necessary.
If inFinalAscent then gradient factors start changing,
and automatic gas selection is made.
This method is called by do_dive()
:param float target_depth: in meter, target depth for the ascend
:raises ModelException: <Exceptions from model>
"""
force_deco_stop = False
in_deco_cycle = False
deco_stop_time = 0
if self.in_final_ascent and settings.USE_OC_DECO:
self.set_deco_gas(self.current_depth)
if self.current_depth < target_depth:
# going backwards !
raise ProcessingError("Not allowed to ascend while descending !")
# Set initial stop to be the next integral stop depth
if self.current_depth % settings.STOP_DEPTH_INCREMENT > 0:
# we are not on a stop depth already : go to the next stop depth
next_stop_depth = (
int(self.current_depth / settings.STOP_DEPTH_INCREMENT) *
settings.STOP_DEPTH_INCREMENT)
else:
next_stop_depth = int(self.current_depth -
settings.STOP_DEPTH_INCREMENT)
self.logger.debug("next_stop_depth: %s", next_stop_depth)
# hack in case we are overshooting or hit last stop or any of
# the other bizzar combinations ...
if (next_stop_depth < target_depth
or self.current_depth < settings.LAST_STOP_DEPTH):
next_stop_depth = target_depth
self.logger.debug("new next_stop_depth: %s", next_stop_depth)
elif next_stop_depth == settings.LAST_STOP_DEPTH:
self.logger.warning("next_stop_depth==LAST_STOP_DEPTH !")
next_stop_depth = target_depth
self.logger.debug("new next_stop_depth: %s", next_stop_depth)
elif next_stop_depth < settings.LAST_STOP_DEPTH:
next_stop_depth = settings.LAST_STOP_DEPTH
self.logger.debug("new next_stop_depth: %s", next_stop_depth)
# Initialise ascent segment start depth
start_depth = self.current_depth
in_ascent_cycle = True # Start in free ascent
# Initialise gradient factor for next (in this case first) stop depth
self.model.gradient.set_gf_at_depth(next_stop_depth)
# Remember maxM-Value and controlling compartment
max_mv = self.model.m_value(depth_to_pressure(self.current_depth))
control = self.model.control_compartment()
while self.current_depth > target_depth:
self.logger.debug("ascent from: %s, to: %s", self.current_depth,
next_stop_depth)
# can we move to the proposed next stop depth ?
model_ceiling = self.model.ceiling()
self.logger.debug("model ceiling: %s", model_ceiling)
while force_deco_stop or next_stop_depth < model_ceiling:
in_deco_cycle = True
# Only used for first entry into deco stop
force_deco_stop = False
if in_ascent_cycle:
# Finalise last ascent cycle as we are now decomp
if start_depth > self.current_depth:
# add ascent segment
self.logger.debug(
"Add AscDesc(1): start_depth:%s "
"current_depth:%s", start_depth,
self.current_depth)
self.output_segments.append(
SegmentAscDesc(start_depth, self.current_depth,
settings.ASCENT_RATE,
self.current_tank, self.pp_o2))
in_ascent_cycle = False
# set m-value gradient under the following conditions:
# - if not in multilevel mode, then set it as soon as
# we do a decompression cycle
# - otherwise wait until we are finally
# surfacing before setting it
if ((not settings.MULTILEVEL_MODE or self.in_final_ascent)
and (not self.model.gradient.gf_set)):
self.model.gradient.set_gf_slope_at_depth(
self.current_depth)
self.model.gradient.set_gf_at_depth(next_stop_depth)
self.logger.debug("...set m-value gradient: %s",
self.model.gradient.gf)
# calculate stop_time
# if (deco_stop_time == 0 and
# self.run_time % settings.STOP_TIME_INCREMENT > 0):
# stop_time = (
# int(self.run_time / settings.STOP_TIME_INCREMENT) *
# settings.STOP_TIME_INCREMENT +
# settings.STOP_TIME_INCREMENT - self.run_time)
# print("+++++ ", stop_time)
# if stop_time == 0:
# stop_time = settings.STOP_TIME_INCREMENT # in second
# else:
stop_time = settings.STOP_TIME_INCREMENT # in second
# execute the stop
self.model.const_depth(depth_to_pressure(self.current_depth),
stop_time, self.current_tank.f_he,
self.current_tank.f_n2, self.pp_o2)
deco_stop_time += stop_time
# sanity check for infinite loop
if deco_stop_time > 300000:
raise InfiniteDeco("Infinite deco error")
model_ceiling = self.model.ceiling()
# finished decompression loop
if in_deco_cycle:
self.logger.debug("...in deco cycle")
# finalise the last deco cycle
self.run_time += deco_stop_time
self.logger.debug(
"update run time with deco time: %ss at %sm (runtime:%s)",
deco_stop_time, self.current_depth, self.run_time)
if settings.FORCE_ALL_STOPS:
force_deco_stop = True
# write deco segment
deco_segment = SegmentDeco(self.current_depth, deco_stop_time,
self.current_tank, self.pp_o2)
deco_segment.mv_max = max_mv
deco_segment.gf_used = self.model.gradient.gf
deco_segment.control_compartment = control
self.output_segments.append(deco_segment)
in_deco_cycle = False
deco_stop_time = 0
if in_ascent_cycle:
self.logger.debug("...in ascent cycle, do asc from %s to %s",
self.current_depth, next_stop_depth)
self.model.asc_desc(depth_to_pressure(self.current_depth),
depth_to_pressure(next_stop_depth),
-settings.ASCENT_RATE,
self.current_tank.f_he,
self.current_tank.f_n2, self.pp_o2)
self.run_time += abs(
(float(self.current_depth) - float(next_stop_depth)) /
float(settings.ASCENT_RATE))
self.logger.debug("update run time : %ss", self.run_time)
else:
self.logger.debug("...in deco cycle, do asc from %s to %s",
self.current_depth, next_stop_depth)
self.model.asc_desc(depth_to_pressure(self.current_depth),
depth_to_pressure(next_stop_depth),
-settings.DECO_ASCENT_RATE,
self.current_tank.f_he,
self.current_tank.f_n2, self.pp_o2)
self.run_time += abs(
(float(self.current_depth) - float(next_stop_depth)) /
float(settings.DECO_ASCENT_RATE))
self.logger.debug("update run time : %ss", self.run_time)
self.output_segments.append(
SegmentAscDesc(self.current_depth, next_stop_depth,
settings.DECO_ASCENT_RATE,
self.current_tank, self.pp_o2))
# now we moved up the the next depth
self.current_depth = next_stop_depth
max_mv = self.model.m_value(depth_to_pressure(self.current_depth))
control = self.model.control_compartment()
# Check and switch deco gas
temp_tank = self.current_tank # remember in case we switch
if self.set_deco_gas(self.current_depth): # True if we changed gas
if in_ascent_cycle:
self.logger.debug(
"Add AscDesc(2): start_depth:%s, "
"current_depth:%s", start_depth, self.current_depth)
self.output_segments.append(
SegmentAscDesc(start_depth, self.current_depth,
settings.ASCENT_RATE, temp_tank,
self.pp_o2))
start_depth = self.current_depth
# set next rounded stop depth
next_stop_depth = int(
self.current_depth) - settings.STOP_DEPTH_INCREMENT
self.logger.debug("next stop depth: %s, target depth: %s",
next_stop_depth, target_depth)
# check in cas we are overshooting or hit last stop
if (next_stop_depth < target_depth
or self.current_depth < settings.LAST_STOP_DEPTH):
self.logger.debug("next_stop_depth (%s) < target_depth (%s)",
next_stop_depth, target_depth)
next_stop_depth = target_depth
elif self.current_depth < settings.LAST_STOP_DEPTH:
self.logger.debug("current_depth (%s) < LAST_STOP_DEPTH (%s)",
self.current_depth, settings.LAST_STOP_DEPTH)
next_stop_depth = target_depth
elif (next_stop_depth < settings.LAST_STOP_DEPTH
and next_stop_depth > 0):
self.logger.debug(
"next_stop_depth (%s) < "
"settings.LAST_STOP_DEPTH (%s)", next_stop_depth,
settings.LAST_STOP_DEPTH)
next_stop_depth = target_depth
if self.model.gradient.gf_set: # update gf for next stop
self.model.gradient.set_gf_at_depth(next_stop_depth)
# are we still in ascent segment ?
if in_ascent_cycle:
self.logger.debug(
"Add AscDesc(3): start_depth:%s, "
"current_depth:%s", start_depth, self.current_depth)
self.output_segments.append(
SegmentAscDesc(start_depth, self.current_depth,
-settings.ASCENT_RATE, self.current_tank,
self.pp_o2))
def do_dive(self):
"""Process the dive.
:raises NothingToProcess: if there is no input segment to process
:raises ModelException: <Exceptions from model>
"""
if self.is_dive_segments() is False:
raise NothingToProcess
# check the segments:
for seg in self.input_segments:
seg.check()
run_time_flag = settings.RUN_TIME
# sets initial state
#
# else:
first_segment = self.input_segments[0]
self.current_tank = first_segment.tank
# Sort self.tanks based on MOD ? why ? see below ?
self.tanks.sort()
self.current_depth = 0.0
self.pp_o2 = first_segment.setpoint
if self.pp_o2 == 0.0:
self.is_closed_circuit = False
else:
self.is_closed_circuit = True
self.in_final_ascent = False
# check if tank for 1rst segment is suitable for descent (OC mode)
if (not self.is_closed_circuit
and self.input_segments[0].tank.get_min_od() > 0):
# tank is not ok, we need to look for another better tank
# at first, try to find a tank suitable
# from 0m to depth of first segment
self.logger.debug("bottom gaz not ok for descent")
self.tanks.reverse()
for tank in self.tanks:
if tank.get_min_od() == 0:
self.logger.debug(
"This tank may be suitable:%s, mod:%s, end at d:%s",
str(tank), tank.mod,
tank.get_end_for_given_depth(
self.input_segments[0].depth))
if (tank.mod >= self.input_segments[0].depth
and tank.get_end_for_given_depth(
self.input_segments[0].depth) <
settings.DEFAULT_MAX_END):
# ok we have a winner
self.logger.info("Changed tank for descent to:%s",
str(tank))
self.current_tank = tank
break
if self.current_tank == self.input_segments[0].tank:
# not found : we need to stop in the descent
# to switch from first gas
# to bottom gas
self.logger.debug("No directly usage tank found,"
" try to stop and change tank")
for tank in self.tanks:
if tank.get_min_od() == 0:
self.logger.debug(
"This tank may be suitable:%s, "
"mod:%s, end at d:%s", str(tank), tank.mod,
tank.get_end_for_given_depth(
self.input_segments[0].depth))
if settings.TRAVEL_SWITCH == 'late':
depth = min(
tank.mod,
tank.get_mod_for_given_end(
settings.DEFAULT_MAX_END))
self.input_segments.insert(
0,
SegmentDive(depth=depth,
tank=self.input_segments[0].tank,
time=0))
self.input_segments.insert(
0, SegmentDive(depth=depth, tank=tank, time=0))
self.current_tank = tank
break
else: # early
depth = self.input_segments[0].tank.get_min_od(
min_ppo2=settings.DEFAULT_MIN_PPO2)
self.input_segments.insert(
0,
SegmentDive(depth=depth,
tank=self.input_segments[0].tank,
time=0))
self.input_segments.insert(
0, SegmentDive(depth=depth, tank=tank, time=0))
self.current_tank = tank
break
self.tanks.sort()
for seg in self.input_segments:
if seg.type == 'const': # only dive segment allowed for input
delta_depth = float(seg.depth) - float(self.current_depth)
# Ascend or descend to dive segment,
# using existing gas and ppO2 settings
if delta_depth > 0.0: # descent
self.model.asc_desc(depth_to_pressure(self.current_depth),
depth_to_pressure(seg.depth),
settings.DESCENT_RATE,
self.current_tank.f_he,
self.current_tank.f_n2, self.pp_o2)
self.output_segments.append(
SegmentAscDesc(self.current_depth, seg.depth,
settings.DESCENT_RATE,
self.current_tank, self.pp_o2))
self.run_time += abs(
float(delta_depth) / (float(settings.DESCENT_RATE)))
self.logger.debug(
"descent time : %ss",
float(delta_depth) / settings.DESCENT_RATE)
else: # ascent
# call ascend method of this class
# for decompression calculation
self.ascend(seg.depth)
# we are now at the desired depth : process the dive segment
self.current_depth = seg.depth # new depth
self.pp_o2 = seg.setpoint
self.current_tank = seg.tank
if seg.time > 0: # only do this if it's not a waypoint
if run_time_flag:
run_time_flag = False # do this one only
self.model.const_depth(depth_to_pressure(seg.depth),
seg.time - self.run_time,
self.current_tank.f_he,
self.current_tank.f_n2,
self.pp_o2)
self.output_segments.append(
SegmentDive(seg.depth, seg.time - self.run_time,
self.current_tank, self.pp_o2))
self.metadata += "Dive to %s for %ss\n" % (
seg.depth, seg.time - self.run_time)
self.logger.debug("Dive to %s for %ss", seg.depth,
seg.time - self.run_time)
# run_time = seg_time because it's
# only done the first time
self.run_time = seg.time
self.logger.debug("update run time : %ss",
self.run_time)
else:
self.model.const_depth(depth_to_pressure(seg.depth),
seg.time,
self.current_tank.f_he,
self.current_tank.f_n2,
self.pp_o2)
self.output_segments.append(
SegmentDive(seg.depth, seg.time, self.current_tank,
self.pp_o2))
self.metadata += "Dive to %s for %ss\n" % (seg.depth,
seg.time)
self.logger.debug("Dive to %s for %ss", seg.depth,
seg.time)
self.run_time += seg.time
self.logger.debug("update run time : %ss",
self.run_time)
else: # process waypoint
self.output_segments.append(
SegmentDive(seg.depth, seg.time, self.current_tank,
self.pp_o2))
# all input segment are now processed: process to ascend to the surface
self.in_final_ascent = True
# ascend to the surface
self.ascend(0.0)
# for each output segment, recalculate runtime and update segments
total_time = 0
for output_seg in self.output_segments:
total_time += output_seg.time
output_seg.run_time = total_time
if total_time != self.run_time:
self.logger.warning(
"dive run_time (%ss) differs from"
" all segments time (%ss)", self.run_time, total_time)
# write metadata into the model
self.model.metadata = self.metadata
# recalculate the gas consumptions
self.do_gas_calcs()
# save the tanks parameters : next dives may use the same tanks,
# but we need here to duplicate tank object within this dive in
# order to save the tank parameters for this dive only
saved_tanks = []
for tank in self.tanks:
saved_tanks.append(copy.deepcopy(tank))
self.tanks = saved_tanks
